Audio Research transistor gear vs. tubes

Sorry to follow-up my own post...but I forgot to mention the CD-2..as an example. This CD player is holding an amazing % of it's retail price on the used market compared to almost all other used players....and it is transistor. How can, or why do, audio consumers think so highly of this unit..and not of the transistor pre-amps or power amps?

Thanks for your thoughts so far. I have had much tube and transistor gear..from many companies...and I am not trying to imply that ARC transistor gear is better than the tube gear...or to even compare them. It seems that the ARC transistor gear is not taken seriously enough when a person is thinking Classe, Pass, Krell, Levinson....etc.. And not that the ARC stuff is better...not trying to start a "defend the brand you own" thread...but was just wondering out loud and in print about the fate of ARC transistor components. I do feel the CD-2 is an interesting example. Happy Holidays.